Definitions of terminologies used for LFMC

(Problematic and required characteristics)

 

  1. Hex: Hose is not perfectly round has a slight to extreme hexagon formation.
  2. Hair: Slivers of metal slight to extreme protruding from the I.D. or O.D. of the hose.
  3. Stay put: When the hose is extended it stays; it does not release back to normal lie.
  4. Crunch: When bent the hose does not bend smooth and makes a crunchy noise.
  5. Scratch: When bent the hose has a scratchy noise.
  6. Rounded convolutions: The top of the convolutions of the hose is not flat but rounded.
  7. Drag: The cover while hot rubs or is out of alignment causing <<<<<< appearance in the cover.
  8. Half the total lateral movement: Extension has to be equal to or less than half the total lateral movement.
  9. Not fully compressed: when compressed the convolutions do not fully compress or touch.
  10. Pick off: This is a compound that builds up around the point and comes off onto the cover in lump form.
  11. Too much extension: The hose can be extended past the maximum allowed per foot.
  12. Minimum extension: The hose has to extend at or past the minimum required amount per foot.
  13. Sticky: When extended; the hose has some sticking tendencies but releases back to normal lie.
  14. Normal lie: Position of the hose in the relaxed state.
  15. Strip burr: Slight burr caused by slitting metal.
  16. Bend diameter: Bend measured from the inside of the hose. ∩
  17. Bend radius: Half the bend diameter.
  18. Side play: The amount of movement between each convolution side to side.
  19. Snaky: When the hose is either extended or compressed fully and it has a zigzag appearance; not straight.
  20. Knuckle: When bending back from the required bend diameter it is irregular (not a smooth return).
  21. Extension: The amount of distance you can extend the hose in one foot.
  22. Compression: The amount of distance you can close up or compress the hose in one foot.
  23. Ovalized: When a certain amount of pressure has been applied which causes the hose to be oval or not round.
  24. Tool mark: Mark or cut on the core made by tooling that is either out of alignment, chipped or worn.
  25. Spring out: The distance that the hose moves after compression back to the extended state.
  26. Jerk spot: The covered hose has been yanked which caused a noticeable size variation in the cover.
  27. Droop: The distance where compressed conduit droops when slid off the edge of a fixed flat surface.
  28. Pattern: There is a noticeable lumpy appearance in the hose which causes size variation every few inches.
  29. Spin: Outside diameter growing bigger after compression or sawing has occurred.